class_docstr: Patch a callback output value
  
  Act like a proxy of the output prop value on the frontend.
  
  Supported prop types: Dictionaries and lists.
code: def __delitem__(self, key):
      validate_slice(key)
      self._operations.append(
          _operation("Delete", self._location + [key])
      )
  
label_desc: Use image node_id 9 for calling the Patch obj's underlying member method code with example usage: obj.__delitem__(key) without return types